Therapeutic lamp



Dec. 27, 1927.

R. X. TUTTLE THERAPEUTIC LAMP Filed Feb. 5. '1927 [N VEN TOR For X. Tu/f/e i Patented Dec. 27, 1927.

1 UNITED STATES PATENT OFFICE ROY X. TUTTLE, BATTLE CREEK, MICHIGAN.

THERAPEUTIC LAMP.

Application filed February 5, 1927. Serial No. 166,175. I

.The mainobject of this invention is to provide an improved therapeutic lamp well invention is clearly defined and pointed out in the claims.

A structure which is a preferred embodiment of my invention is clearly illustrated in the accompanying drawing forming a part of this application, in which:

Fig. l is a side elevation of my improved lamp, one of the tubular radiating elements being shown in longitudinal section on line 11 of F ig. 2.

Fig. 2 is a transverse sect-ion through one unit of the lamp on a line correspond ing to line 22 of Fig. 1. i

Fig. 3 is a side elevation of parts of the lamp illustrating structural details.

Fig. 4: is side elevation of one of the resistance cores with a portion of theresistance indicated thereon.

Fig. 5 is a side view of one of the tubular radiating elements.

Referring to the drawing I provide a base member 1, preferably a casting, having out wardly diverging arms 2. The threaded plug shell 3 is mounted on this base member. The central terminal 1 of the socket plug is extended into a shell 5. The arms have holes 6 therein in which the flanged insulating bushings 7 are arranged, insulating disks 7 being arranged on 'the under sides of the arms.

The posts 8 are threaded at each end and are provided with clamping nuts 9 and 10 at their lower ends engaging the inner and outer sides of the insulating material described whereby the posts are rapidly mount ed on the arms. The upper ends of the posts are connected by the cross piece 11 and the posts are threaded into this cross piece.

Loosely arranged on the posts are cores 12. Resistance coils 14 are wound upon the cores, the upper ends of these resistance coils being connected by the connecting wire 15 which is secured to the under side of the cross piece 11 at 16. The inner end 17 of one oi the coils is connected to the post 5 while the inner end 18 of the other coil is connected to the base by the binding screw 19. i

The tubular radiating elements 2U 'Wl1 ich are formed of what is commercially known as lava surround the coils to be heated to incandescence thereby. These tubes 20 have longitudinal slits 21 therein. The cores and the radiating elements are arranged onthe posts between the base and cross piece in non-clamping relation, that is, they are sufficiently loose to preventing breakage. The longitudinal slits also permit expansion and contraction without danger of breaking the radiating elements, which are formed of earthy material and consequently might be fractured; it they were rigidly clamped, although the longitudinal slits reduce the likelihood of fracture to a minimum. 2

My improved lamp is very economicalto produce, may be used with the desired reflector inan ordinary lamp socket and is highly eflicient.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is: t I I 1. In a device of the class described, the combination with a socket plug provided with a centrally disposed terminal post and 5 having outwardly diverging arms 'with openings therein,

insulating bushings dis-' permit expansion, thereby posed in said openingsin said arms, a top cross piece, posts threaded into said cross piece and having their lower ends disposed through said bushings, said posts being pro- Vided with clamping nuts above and below said bushings whereby they are rigidly mounted on said arms, cylindrical cores arranged on said posts, resistance coils on said cores, said coils being electrically connected at their outer ends, the inner end of one of said coils being connected tosaid terminal post and the other to one of said arms, and tubular radiating elements surrounding said cores and resistance coils, said radiating elements having longitudinal slits therein and being loosely supported between said arms and cross piece.

2.. In a device of the class described, the

combination with a socket plug provided wlth a centrally disposed terminal post and having outwardly diverging arms with openings therein, insulating bushings disposed in said openings in said arms, a top cross piece, posts threaded into said cross piece and having their lower ends disposed Ill) through said bushings said posts being pro vided with clamping nuts above and below said bushings whereby they are rigidly mounted on said arms. cylindrical cores arranged on said posts, resistance coils on said cores, said coils being electrically connected at their outer ends, the inner end of one of said coils being connected to said terminal post and the other to one of said arms, and tubular radiating elements surround ing said cores and resistance coils.

3. In a device of the class described the combination with a socket plug provided with a centrallvdisposed terminal postyand having forwardly diverging arms with openings-therein, posts mountetfl on said arms and insulated therefrom, a cross piece \fIOl'lllGCtlDg said'arms, cylindrical cores a; aged on said posts. resistance coils on said coresv .Jaid coils bcing electrically connectedat their outer ends, the inner end of one or said coils being connected to said tern' inal post and the other- -to one or. said arms, and

tubular radiating elemen sin'roundino said cores-and resistance coils. said radiating; elements having longitudinal slits therein and being loosely supported between said arms and cross piece.

4. In a device of the class described. the combination with a soekct plug provided with a cent-rally disposed tcrn' inal post and having forwardly diver-51mg arms withopenings therein, posts mounted on sa d arms and insulated therefrom. a cross p ece conmeeting said arms, cylindrical cores arran god on said posts. resistance coils on said cores. said coils being; electrically conn cted at their outer ends. the inner end of one oi said coils being connected to said termir-ai post and the other to one of said arms. and tubular radiating; elements surrounding; said cores and resistance coils.

5. In a device of the class described. the

combination with the base member provided with a socket plug posts mounted. on said base member and insulated theretrom, a cross piece connecting the outer ends ol' said posts, the base member cross piece and posts disposed in non-clamping relation betweensaid arms and cross pieces 6. In a device of the class described, the con'ilii'n'iation with the base member provided with a socket plug. posts mounted on said base member and insulated therefrom. a cross in ec-e connecting the outer ends ct said posts the base member. cross piece and posts.

constituting a rigid t'ramci cores arranged on said posts, resistance coils on said cores electrically connected to said socket plug. and tubular radiating elements embracing said coils and cores.

7. In a device ot the class described. the combination with the base m-en'iber provided with a socket pluem; posts mounted on; said ase member and insulated therefrom. a cross piece connecting the outer ends of said pos s cores arranged on said posts. and res stance coils on said cores electrically connected to said socket plug.

8. In a device of the class described. the combination with the base member. posts mounted on said basememher and insulated therefrom, a cross piececonnectiim the outer ends of said posts. the base member. cross piece and posts constitutimra rigid 'trame. and radiating elements including); resistance coils mounted on said posts.

In Witness whereotl I have hereunto set my h and.

ROY X. TUTTL 1*). 

